lytro illum-麻将胡了pg电子网站

数据集介绍：

收集了 640 个在大小、纹理、背景杂波和照明等方面具有显着变化的光场。生成微透镜图像阵列和中心观察图像，并生成相应的地面实况图。

citation

if you find our paper and repo useful, please cite our paper. thanks!

					@article{zhang2020,
    title={light field saliency detection with deep convolutional networks},
    author={zhang, jun and liu, yamei and zhang, shengping, poppe, ronald and wang, meng},
    journal={ieee transactions on image processing},
    volume={29},
    pages={4421-4434}，
    year={2020}
}
				

the lytro illum lures buyers with the promise of refocusable images, but its image quality is disappointing and its price sky high.

expert news, reviews and videos of the latest digital cameras, lenses, accessories, and phones. get answers to your questions in our photography forums.

expert reviews of all the latest cameras, lenses, smartphones and accessories, since 2003.

expert news, reviews and videos of the latest digital cameras, lenses, accessories, and phones. get answers to your questions in our photography forums.

the latest technology news and reviews, covering computing, home entertainment systems, gadgets and more

lytro illum review: lytro's second light field camera offers a much better demo of this fascinating tech.

the lytro illum is a new light field camera aimed at professional photographers. boldly billed as "a new medium capable of capturing visual experiences in their purest form", is it worth adding the lytro illum to your kitbag? read our lytro illum review to find out...

lytro illum | ▤ full specifications: sensor type: cmos, effective pixels: 40, iso: 80, 3200, iso minimum: 80, iso maximum: 3200, maximum

the illum takes lytro’s light-field camera technology to the next level. unfortunately, high price, mediocre picture quality, and steep learning curve make it a niche product.

expert news, reviews and videos of the latest digital cameras, lenses, accessories, and phones. get answers to your questions in our photography forums.

three years after lytro introduced the first light-field technology camera that allows users to refocus a photo after it is taken, the company is back

透镜阵列

lytro illum是典型的透镜阵列方案，ren ng在论文中对此原理进行了详细的介绍。

首先，一束光从世界空间，经过透镜，聚焦到传感器平面上。光走的这一路上，在镜头平面会经过一个点u，在传感器平面也会有一个落点x。u和x构成一个描述这条相机内光线的变量。由于u和x都是平面上的点，他们在各自平面还有两个坐标v和y，这样描述这条光线的，就是l（u，v，x，y）这样一个4维变量。

这种微透镜阵列的方案，大体类似于在每个微透镜后面，用后面的像素为物体拍一张照片。多个微透镜的照片会可能重叠在同一个像素点上，后面通过数学方法可以分离。光场相机输出的照片的像素数，也就是微透镜阵列的总数。由于每个微透镜后面的照片视角略微有所不同，也就可以根据视差算出当前照片对应场景的深度图。